EVALUATION OF MELTING PROPERTIES FOR PARAFFIN PREDICTION IN THE MULTI SOLID SOLUTION (MSS) MODEL

Abstract

This article presents the calculation and modification of melting properties for a certain Kazakh oil for the subsequent calculation of the Multisolid model. The bulk of crude oil in Kazakhstan contains heavy hydrocarbons that precipitate as a solid paraffin phase at low temperatures. The deposition of deposited paraffin on the pipe walls is one of the complex flow assurance problems that causes a decrease and complete blockage of oil rates due to a decrease in the flow cross-sectional area in pipelines. In addition, above ground facilities require higher power consumption and equipment failure due to paraffin plugs. Wax precipitation also increases the viscosity of the oil mixture, resulting in an increase in the energy requirement for transporting the crude oil. The main purpose of this study is to investigate melting properties and their influence on predictive wax deposition. The solution of the set goal is achieved by solving the problems of modifying and adapting existing thermodynamic models for Kazakhstani oils. At the moment, one of the main limitations of existing models is their applicability to a wide range of crude oil types. While this modified paraffin forecasting model will focus on Kazakh crude oil. As a result, modified equations have been developed to determine melting properties, namely melting point, pour point and enthalpy. The obtained results of the absolute average deviation showed the effectiveness of using the proposed correlation for measuring the pour point and melting point for Kazakhstani oils.